Cubic-quartic optical soliton perturbation with Fokas–Lenells equation by semi-inverse variation von Biswas, A., Dakova, A., Khan, S., Ekici, M., Moraru, L., Belic, M.R.

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Optical soliton perturbation and conservation law with Kudryashov’s refractive index having quadrupled power-law and dual form of generalized nonlocal nonlinearity von Yildirim, Y., Biswas, A., Kara, A.H., Ekici, M., Khan, S., Belic, M.R.

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